Bridge with resonance cancellation function

Abstract

The application discloses a bridge with resonance elimination function, which comprises a bridge plate, a bridge pier, a cable, a first buffer component arranged between the bridge plate and the cable, and a second buffer component arranged between the bottom of the bridge plate and a lower cross beam of the bridge pier. The first buffer component comprises a cylinder body and a piston assembly connected with the cable. The piston assembly can reciprocate in the cylinder body, so that damping liquid flows at both ends of the piston assembly. The piston assembly comprises a first piston piece and a second piston piece capable of relative movement, and a driving piece arranged between the first piston piece and the second piston piece. When the bridge plate is subjected to a downward pressure, the second buffer component can deliver hydraulic fluid to the driving piece, so that the driving piece drives the first piston piece and the second piston piece to move relatively, so as to exert a tension force on the cable. The application can absorb the energy generated by the large-amplitude vibration of the bridge plate, and can also offset the force generated on the bridge plate when a vehicle rapidly drives through the bridge, so as to achieve the purpose of inhibiting the vibration of the bridge and improve the stability of the whole bridge.

Description

Technical Field

[0001] This invention relates to the field of bridge technology, and in particular to a bridge with resonance cancellation function. Background Technology

[0002] Because of their light weight and high flexibility, long-span cable-stayed bridges are prone to significant deformation and vibration under external loads such as traffic and wind. Long-term vibration can easily lead to structural damage to the bridge, thus creating significant safety hazards.

[0003] Currently, vibration reduction is mainly achieved by installing damping dampers on cable-stayed bridges. The damping dampers are fixed to the bridge deck, with one end connected to the cable-stayed bridge's cables via a first piston component. However, this structure requires a large amount of space for the damping dampers, making installation difficult. Furthermore, while the dampers primarily suppress cable sway, the bridge itself experiences vibrations when heavy traffic loads travel on the deck. Over time, this can damage the bridge's internal structure and affect its normal use. Summary of the Invention

[0004] The main objective of this invention is to provide a bridge with resonance cancellation function, thereby solving the aforementioned technical problems.

[0005] The technical problem solved by this invention is achieved by the following technical solution:

[0006] A bridge with resonance cancellation function, characterized in that it comprises:

[0007] Bridge plate;

[0008] Bridge piers;

[0009] Multiple cables are installed between the upper end of the pier and the bridge deck;

[0010] A first buffer component is disposed between the bridge plate and the cable. The first buffer component includes a cylinder containing damping fluid and a piston assembly connected to the cable. The piston assembly can move axially back and forth within the cylinder to allow the damping fluid to flow at both ends of the piston assembly. The piston assembly includes a first piston member and a second piston member that can move relative to each other. A driving member is disposed between the first piston member and the second piston member.

[0011] The second buffer component is disposed between the bottom of the bridge deck and the lower crossbeam of the pier. The second buffer component is connected to the drive component. When the bridge deck is subjected to downward pressure, the second buffer component can deliver hydraulic fluid to the drive component to drive the drive component to move the first piston and the second piston relative to each other, so as to apply tension to the cable.

[0012] In some embodiments, the second buffer component includes:

[0013] A support seat is installed on the lower crossbeam of the pier, and the support seat has a cavity for accommodating hydraulic fluid.

[0014] A piston plate is slidably abutted against the inner wall of the support base, and the piston plate is supported on the bottom surface of the bridge plate;

[0015] An oil pipe connects the cavity to the drive unit.

[0016] In some embodiments, the piston assembly divides the cylinder into an upper chamber and a lower chamber, and the cylinder is provided with a fluid passage communicating between the upper chamber and the lower chamber;

[0017] As the piston assembly reciprocates, the damping fluid flows between the upper and lower chambers through the fluid channel.

[0018] In some embodiments, the first buffer component further includes an isolation component disposed within the upper chamber, the isolation component being spaced apart above the second piston component, the isolation component comprising:

[0019] A partition plate is connected to the cylinder body, and the partition plate is provided with an oil passage hole;

[0020] A one-way valve plate is disposed on the bottom surface of the partition plate near the second piston member. The one-way valve plate can undergo elastic deformation under the action of the damping fluid to open or close part of the oil passage.

[0021] In some embodiments, the first buffer component further includes an adjustment component, the adjustment component comprising:

[0022] A regulating valve plate is disposed on the partition plate;

[0023] A drive motor, connected to the regulating valve plate, is used to drive the regulating valve plate to rotate, thereby adjusting the size of the oil passage.

[0024] In some embodiments, the first buffer component further includes:

[0025] A limiting seat is disposed in the cylinder body, the limiting seat being located above the second piston member, and is used to limit the movement position of the second piston member;

[0026] An elastic element is disposed within the limiting seat, with one end of the elastic element connected to the limiting seat and the other end connected to the second piston element.

[0027] In some embodiments, the first piston member includes:

[0028] The piston valve is slidably connected to the inner wall of the cylinder.

[0029] A piston rod is disposed on the piston valve, the other end of the piston rod passes through the second piston member and extends to the cylinder body, and a cable is disposed on the piston rod.

[0030] In some embodiments, the driver includes:

[0031] A piston cylinder has a piston chamber inside and a through hole at the bottom connecting the piston chamber and the oil passage pipe;

[0032] The fine-tuning piston is slidably disposed within the piston chamber.

[0033] In some embodiments, the drive unit is provided with multiple sets, and a flow divider is further provided between the oil pipe and the drive unit, the flow divider comprising:

[0034] The main body is disposed inside the cylinder and located below the first piston member, and the main body has a cavity.

[0035] A delivery pipe is provided on the main body, with the other end of the delivery pipe extending out of the cylinder body to connect the cavity with the oil passage pipe;

[0036] Multiple branch pipes connect the cavity to each of the piston cylinders.

[0037] In some embodiments, mounting seats are provided on both opposite sides of the bridge plate, and a connecting seat connected to the mounting seats is provided on the cylinder body.

[0038] The beneficial effects of this invention are:

[0039] The bridge with resonance cancellation function of this invention utilizes a first buffer component positioned between the bridge deck and the cables. When the bridge deck vibrates, a piston assembly reciprocates axially along the cylinder as the cables tighten and loosen. Damping fluid within the cylinder flows back and forth between the two ends of the piston assembly to generate damping force, thereby absorbing the energy generated during bridge deck vibration and suppressing bridge vibration. A second buffer component positioned between the bottom of the bridge deck and the lower crossbeam of the pier allows hydraulic fluid within the second buffer component to be delivered to the drive component within the first buffer component when multiple vehicles are traveling on the bridge deck. This drives the first and second piston components to move relative to each other, applying tension to the cables. This causes the forces on the bridge deck in the vertical direction to cancel each other out, reducing bridge deck vibration and improving the overall stability of the bridge. Therefore, the bridge with resonance cancellation function of this application is not only easy to construct, but also, by using two buffer components, can absorb the energy generated during large-amplitude bridge deck vibrations and counteract the forces exerted on the bridge deck by vehicles traveling at high speeds, thus suppressing bridge vibration and improving the overall stability of the bridge. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0041] Figure 1 This is a schematic diagram of a three-dimensional bridge structure with resonance cancellation function according to an embodiment of the present invention;

[0042] Figure 2 This is a three-dimensional structural diagram of a bridge with resonance cancellation function from another angle according to an embodiment of the present invention;

[0043] Figure 3 This is a cross-sectional view of a bridge with resonance cancellation function according to an embodiment of the present invention.

[0044] Figure 4 for Figure 3 Enlarged view of part A in the middle;

[0045] Figure 5 This is a schematic diagram of a three-dimensional bridge structure with resonance cancellation function according to an embodiment of the present invention (hiding the bridge deck, piers and mounting base);

[0046] Figure 6 This is a three-dimensional structural diagram of the first buffer component in a bridge with resonance cancellation function according to an embodiment of the present invention;

[0047] Figure 7 This is a cross-sectional view of the first buffer component in a bridge with resonance cancellation function according to an embodiment of the present invention.

[0048] Figure 8 This is a three-dimensional structural diagram (hidden cylinder) of the first buffer component in a bridge with resonance cancellation function according to an embodiment of the present invention.

[0049] Figure 9 for Figure 8 Another perspective of the three-dimensional structure;

[0050] Figure 10 This is a three-dimensional structural diagram of a regulating valve plate in a bridge with resonance cancellation function according to an embodiment of the present invention.

[0051] Figure Labels

[0052] 10-Bridge plate;

[0053] 20-Bridge pier;

[0054] 30-Lasso;

[0055] 40-First buffer component; 41-Cylinder body; 411-Upper chamber; 412-Lower chamber; 413-Fluid passage; 414-Connecting seat; 42-First piston component; 421-Piston valve; 422-Piston rod; 43-Second piston component; 44-Drive component; 441-Piston cylinder; 442-Fine-adjusting piston; 45-Isolation component; 451-Baffle plate; 4511-Oil passage; 452-One-way valve plate; 46-Adjusting component; 461-Adjusting valve plate; 4611-Gear; 462-Drive motor; 47-Limit seat; 48-Elastic component; 49-Diverter component; 491-Main body; 492-Conveying pipe; 493-Diverter pipe.

[0056] 50 - Second buffer component; 51 - Support seat; 52 - Piston plate; 53 - Oil passage pipe;

[0057] 60 - Mounting bracket. Detailed Implementation

[0058] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0059] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0060] It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0061] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0062] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0063] Please see Figures 1 to 10 As shown, the bridge with resonance cancellation function includes a bridge deck 10, a pier 20, a cable 30, a first buffer component 40, and a second buffer component 50.

[0064] Bridge deck 10 is a reinforced concrete structure.

[0065] The pier 20 is also a reinforced concrete structure, which may include two opposing columns and a crossbeam between the two columns. The crossbeam includes an upper crossbeam located at the top of the columns and a lower crossbeam located in the middle of the columns for supporting the bridge deck 10.

[0066] Multiple cables 30 are provided. One end of each cable 30 is fixed to the upper end of the pier 20, and the other end is spaced apart along the extension direction of the bridge deck 10 to connect the bridge deck 10 and the pier 20.

[0067] The first buffer component 40 is disposed between the bridge plate 10 and the cable 30. The first buffer component 40 includes a cylinder 41 and a piston assembly. The cylinder 41 contains damping fluid. The piston assembly is connected to the cable 30 and is at least partially disposed within the cylinder 41. It is capable of reciprocating along the axial direction of the cylinder 41, causing the damping fluid to flow back and forth at both ends of the piston assembly and generating damping force, thereby suppressing the vibration of the cable 30. The piston assembly includes a first piston 42 and a second piston 43 that can move relative to each other. The first piston 42 and the second piston 43 can be arranged vertically at intervals, and a driving component 44 is disposed between the first piston 42 and the second piston 43 to drive their relative movement.

[0068] The second buffer component 50 is disposed between the bottom of the bridge deck 10 and the lower crossbeam of the pier 20. The second buffer component 50 is connected to the drive component 44. The second buffer component 50 can be a hydraulic support device containing hydraulic fluid. When the bridge deck 10 is subjected to downward pressure, such as when multiple vehicles pass over the bridge deck in sequence, the downward pressure on the bridge deck 10 causes the bridge deck 10 to move downward, thereby squeezing the second buffer component 50. This causes the hydraulic fluid inside the second buffer component 50 to flow into the drive component 44, which in turn drives the drive component 44 to move the first piston component 42 and the second piston component 43 relative to each other, thereby applying tension to the cable 30. This counteracts the force on the bridge deck 10 in the direction of its movement, keeping the bridge deck 10 in a state of force balance along the direction of its movement, thereby reducing the bridge deck vibration caused by traffic load and improving the stability of the bridge structure.

[0069] In this embodiment, the first buffer component 40, located between the bridge deck 10 and the cable 30, allows the piston assembly to reciprocate axially along the cylinder 41 as the cable 30 tightens and loosens when the bridge deck 10 vibrates. The damping fluid within the cylinder 41 flows back and forth between the two ends of the piston assembly to generate damping force, thereby absorbing the energy generated during the vibration of the bridge deck 10 and suppressing bridge vibration. The second buffer component 50, located between the bottom of the bridge deck 10 and the lower crossbeam of the pier 20, allows the hydraulic fluid within the second buffer component 50 to be delivered to the drive component 44 within the first buffer component 40 when multiple vehicles are traveling on the bridge deck. This drives the first piston component 42 and the second piston component 43 to move relative to each other, applying tension to the cable 30. This causes the forces on the bridge deck 10 in the vertical direction to cancel each other out, reducing the vibration of the bridge deck 10 and improving the overall stability of the bridge. Therefore, the bridge with resonance cancellation function of this application is not only easy to construct, but also, by setting two buffer components, can not only absorb the energy generated when the bridge deck 10 vibrates at large amplitude, but also counteract the force generated on the bridge deck 10 when vehicles drive quickly across the bridge surface, thereby achieving the purpose of suppressing bridge vibration and improving the overall stability of the bridge.

[0070] For some embodiments of this application, please refer to Figure 1 and Figure 2 Mounting seats 60 are provided on both sides of the bridge surface of the bridge plate 10. The mounting seats 60 are arranged along the length of the bridge plate 10. A connecting seat 414 is provided on the cylinder body 41. One end of the connecting seat 414 can be hinged to the mounting seat 60.

[0071] Please see Figure 7In some embodiments of this application, the cylinder body 41 has a closed receiving cavity inside, and the piston assembly is at least partially disposed inside the cylinder body 41, dividing the receiving cavity of the cylinder body 41 into an upper chamber 411 and a lower chamber 412. The two ends of the cylinder body 41 are respectively provided with a first opening communicating with the upper chamber 411 and a second opening communicating with the lower chamber 412. The cylinder body 41 is provided with a fluid channel 413 communicating with the first opening and the second opening. When the piston assembly reciprocates, the damping fluid flows between the upper chamber 411 and the lower chamber 412 through the fluid channel 413.

[0072] Specifically, when the cable 30 is in a relaxed state, the piston assembly pulls the cable 30 toward the bridge plate 10 and gradually compresses the volume of the lower chamber 412, allowing the damping fluid in the lower chamber 412 to enter the upper chamber 411 through the fluid channel 413; when the cable 30 is in a tensioned state, the piston assembly is pulled by the cable 30 toward the direction away from the bridge plate 10 and gradually compresses the volume of the upper chamber 411, allowing the damping fluid in the upper chamber 411 to enter the lower chamber 412 through the fluid channel 413.

[0073] In some embodiments of this application, the first piston member 42 may include a piston valve 421 and a piston rod 422. The piston valve 421 is disposed inside the cylinder body 41 and is slidably connected to the inner wall of the cylinder body 41. The piston rod 422 is disposed on the piston valve 421, and the other end of the piston rod 422 extends outside the cylinder body 41 and is sealed to the open end of the cylinder body 41. The second piston member 43 is slidably connected to the inner wall of the cylinder body 41 and sleeved on the outside of the piston rod 422. The cable 30 is fixedly connected to the piston rod 422.

[0074] Furthermore, in some embodiments of this application, such as Figure 7 and Figure 9As shown, the first buffer component 40 also includes an isolation component 45 disposed within the upper chamber 411. The isolation component 45 is spaced above the second piston component 43. The isolation component 45 includes a partition plate 451 and a one-way valve plate 452. The partition plate 451 is fixedly connected to the cylinder body 41. The partition plate 451 is provided with oil passage holes 4511. The number of oil passage holes 4511 can be multiple. For example, there are four oil passage holes 4511, which are arranged in a circumferential array on the partition plate 451. The one-way valve plate 452 is disposed on the bottom surface of the partition plate 451 near the second piston component 43. The one-way valve plate 452 can be an elastic element, and its shape can be rectangular. The one-way valve plate 452 is radially disposed along the middle of the partition plate 451 to block part of the oil passage holes 4511. When the cable 30 is in a slack state, the piston assembly pulls the cable 30 towards the bridge plate 10. The damping fluid in the lower chamber 412 enters the upper part of the isolation component 45 through the fluid channel 413, exerting a downward force on the one-way valve plate 452. This causes the one-way valve plate 452 to undergo elastic deformation, thereby opening some of the closed oil passages 4511. This allows the damping fluid to enter the upper chamber 411 through the four oil passages 4511, achieving rapid tensioning of the cable 30 and preventing the bridge plate 10 from swaying. When the cable 30 is in a taut state, the piston assembly moves away from the bridge plate 10. At this time, some of the oil passages 4511 are closed by the one-way valve plate 452, thus creating resistance to the damping fluid. This prevents the damping fluid from rapidly entering the lower chamber 412, thereby damping the bridge plate 10 and preventing it from moving rapidly upward in a short period of time, thus achieving the purpose of vibration reduction.

[0075] Furthermore, in some embodiments of this application, such as Figure 7 and Figure 8 As shown, the first buffer component 40 also includes an adjustment component 46, which includes an adjustment valve plate 461 and a drive motor 462.

[0076] Specifically, see Figure 8 and Figure 10 The regulating valve plate 461 is adapted to the size and shape of the partition plate 451. The regulating valve plate 461 is mounted on the partition plate 451 and can rotate relative to the partition plate 451. The regulating valve plate 461 has a notch that exposes the oil passage hole 4511. The drive motor 462 can be fixed on the cylinder block 41, and its output end is connected to the regulating valve plate 461 to drive the regulating valve plate 461 to rotate, thereby blocking the oil passage hole 4511 and adjusting the damping fluid flow rate to achieve the purpose of adjusting the damping magnitude.

[0077] The regulating valve plate 461 is provided with teeth 4611 around its periphery, and the output end of the drive motor 462 is provided with a gear that meshes with the teeth 4611. Through the cooperation between the teeth 4611 and the gear, the regulating valve plate 461 can be driven to rotate.

[0078] Please see Figure 7 In some embodiments of this application, the first buffer component 40 may further include a limiting seat 47 and an elastic element 48. The limiting seat 47 is disposed within the cylinder body 41 and located above the second piston component 43, used to limit the movement position of the second piston component 43. The elastic element 48 is disposed within the limiting seat 47, and the elastic element 48 is a spring, with one end connected to the limiting seat 47 and the other end connected to the second piston component 43. When the cable 30 is pulled upward, the piston assembly moves upward under the action of the cable 30 until the top surface of the second piston component 43 abuts against the bottom surface of the limiting seat 47. At this time, the elastic element 48 is compressed, and the cable 30 is in a taut state. When the cable 30 is relaxed, the elastic element 48 extends downward and resets under its own elastic force, pushing the piston assembly downward to tighten the cable 30, thereby achieving the purpose of vibration reduction.

[0079] Please see Figure 4 In some embodiments of this application, the second buffer component 50 may include a support base 51, a piston plate 52, and an oil passage 53. The support base 51 is mounted on the lower crossbeam of the pier 20, and has a cavity inside for accommodating hydraulic fluid. The piston plate 52 slidably abuts against the inner wall of the support base 51 and is supported on the bottom surface of the bridge plate 10. The oil passage 53 connects the cavity to the drive component 44. When multiple vehicles travel at high speed on the bridge deck 10, they exert downward pressure on the bridge deck 10, thereby squeezing the piston plate 52 downward. This causes the piston plate 52 to move downward along the cavity of the support seat 51 and gradually compress the volume of the inner cavity of the support seat 51. At this time, the hydraulic fluid in the cavity of the support seat 51 flows to the drive member 44 through the oil pipe 53, driving the drive member 44 to move. Since the second piston member 43 has been limited and fixed, the drive member 44 can drive the first piston member 42 to move downward to apply tension to the cable 30, thereby counteracting the force on the bridge deck 10 in the direction of its movement, reducing the bridge deck vibration caused by traffic load, and improving the overall stability of the bridge.

[0080] For some embodiments of this application, please refer to Figure 7 and Figure 9 The drive unit 44 may include a piston cylinder 441 and a fine-tuning piston 442. The piston cylinder 441 has a piston chamber and a through hole at the bottom connecting the piston chamber to the oil pipe 53. The fine-tuning piston 442 is slidably disposed in the piston chamber. When the bridge plate 10 is subjected to downward pressure, the hydraulic fluid in the second buffer component 50 is delivered to the drive unit 44 and enters the piston chamber through the through hole at the bottom of the piston cylinder 441, causing the fine-tuning piston 442 to extend, thereby driving the first piston 42 to move downward and tighten the cable 30.

[0081] Multiple sets of drive components 44 can be provided, and these sets of drive components 44 are evenly distributed circumferentially at the bottom of the second piston component 43. By providing multiple sets of drive components 44, the first piston component 42 can be driven to move steadily. A flow divider 49 is also provided between the oil passage pipe 53 and the drive components 44. The flow divider 49 may include a main body 491, a delivery pipe 492, and a flow divider pipe 493. The main body 491 is located inside the cylinder 41 and below the first piston 42. The main body 491 has a cavity. The delivery pipe 492 is located at the bottom of the main body 491, and the other end of the delivery pipe 492 extends to the outside of the cylinder 41. The delivery pipe 492 connects the cavity to the oil line 53. Multiple branch pipes 493 are provided, and multiple branch pipes 493 are corresponding to multiple sets of drive components 44. One end of the branch pipe 493 connects to the cavity of the main body 491, and the other end connects to the corresponding piston cylinder 441. In this way, when the second buffer component 50 is subjected to downward pressure, the hydraulic fluid inside it enters the main body 491 through the oil line 53 and the delivery pipe 492, and then is injected into the corresponding piston cylinder 441 through each branch pipe 493, causing each fine-tuning piston 442 to extend, thereby driving the first piston 42 to move downward.

[0082] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0083] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, and the existence of an infinite number of specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A bridge with resonance cancellation function, characterized by, The utility model relates to a bridge deck (10), a pier (20), a plurality of cables (30) arranged between the upper end of the pier (20) and the bridge deck (10), a first buffer component (40) arranged between the bridge deck (10) and the cable (30), the first buffer component (40) comprising a cylinder (41) containing damping liquid and a piston assembly connected with the cable (30), the piston assembly being axially reciprocable in the cylinder (41) to make the damping liquid flow at both ends of the piston assembly, the piston assembly comprising a first piston piece (42) and a second piston piece (43) capable of relative movement, a driving piece (44) being arranged between the first piston piece (42) and the second piston piece (43), a second buffer component (50) arranged between the bottom of the bridge deck (10) and the lower crossbeam of the pier (20), the second buffer component (50) being in communication with the driving piece (44) and capable of delivering hydraulic fluid to the driving piece (44) when the bridge deck (10) is subjected to a downward pressure to drive the driving piece (44) to drive the first piston piece (42) and the second piston piece (43) to move relative to each other to apply tension to the cable (30), the second buffer component (50) comprising a support seat (51), a piston plate (52) and an oil passage pipe (53), the support seat (51) being mounted on the lower crossbeam of the pier (20), the support seat (51) having a cavity containing hydraulic fluid, the piston plate (52) being slidably abutted against the inner wall of the support seat (51) and supported on the bottom surface of the bridge deck (10), the oil passage pipe (53) being in communication with the cavity and the driving piece (44), the first piston piece (42) comprising a piston valve (421) and a piston rod (422), the piston valve (421) being slidably connected with the inner wall of the cylinder (41), the piston rod (422) being arranged on the piston valve (421) and extending out of the cylinder (41) through the second piston piece (43), the cable (30) being arranged on the piston rod (422), the driving piece (44) comprising a piston cylinder (441) and a fine adjustment piston (442), the piston cylinder (441) being provided with a piston cavity and a through hole in communication with the piston cavity and the oil passage pipe (53), the fine adjustment piston (442) being slidably arranged in the piston cavity, the driving piece (44) being provided with a plurality of groups, a flow divider (49) being further arranged between the oil passage pipe (53) and the driving piece (44), the flow divider (49) comprising a main body (491), a delivery pipe (492) and a plurality of flow distribution pipes (493), the main body (491) being arranged in the cylinder (41) below the first piston piece (42) and provided with a cavity. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The delivery pipe (492) is arranged on the main body (491), and the other end of the delivery pipe (492) extends out of the cylinder (41) to communicate the cavity with the oil passage pipe (53); A plurality of the distribution pipes (493) communicate the cavity with the piston cylinders (441); The bridge plate (10) is provided with mounting seats (60) on opposite sides, and the cylinder (41) is provided with connecting seats (414) connected with the mounting seats (60).

2. The bridge with resonance cancellation function according to claim 1, characterized in that, The piston assembly divides the cylinder (41) into an upper cavity (411) and a lower cavity (412), and the cylinder (41) is provided with a fluid passage (413) communicating the upper cavity (411) and the lower cavity (412); When the piston assembly reciprocates, the damping liquid flows between the upper cavity (411) and the lower cavity (412) through the fluid passage (413).

3. The bridge with resonance cancellation function according to claim 2, characterized in that, The first buffering component (40) further comprises a separation component (45) arranged in the upper cavity (411), and the separation component (45) is arranged above the second piston member (43) in a spaced manner, and the separation component (45) comprises: a partition plate (451) connected with the cylinder (41), and the partition plate (451) is provided with an oil passage hole (4511); a one-way valve plate (452) arranged on the bottom surface of the partition plate (451) close to the second piston member (43), and the one-way valve plate (452) can be elastically deformed under the action of the damping liquid to open and close part of the oil passage hole (4511).

4. The bridge with resonance cancellation function according to claim 3, characterized in that, The first buffering component (40) further comprises an adjusting component (46), and the adjusting component (46) comprises: an adjusting valve plate (461) arranged on the partition plate (451); a driving motor (462) connected with the adjusting valve plate (461) and used for driving the adjusting valve plate (461) to rotate to adjust the size of the oil passage hole (4511).

5. The bridge with resonance cancellation function according to claim 1, characterized in that, The first buffering component (40) further comprises: a limiting seat (47) arranged in the cylinder (41) and located above the second piston member (43) to limit the movement position of the second piston member (43); a resilient member (48) arranged in the limiting seat (47), and one end of the resilient member (48) is connected with the limiting seat (47), and the other end of the resilient member (48) is connected with the second piston member (43).

Images